11111021222101 has 8 divisors (see below), whose sum is σ = 11764662450840. Its totient is φ = 10457385742848.

The previous prime is 11111021222057. The next prime is 11111021222177. The reversal of 11111021222101 is 10122212011111.

It can be written as a sum of positive squares in 4 ways, for example, as 1365848003025 + 9745173219076 = 1168695^2 + 3121726^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11111021222101 - 2⁷ = 11111021221973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111021222801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2918545 + ... + 5544361.

It is an arithmetic number, because the mean of its divisors is an integer number (1470582806355).

Almost surely, 2^{11111021222101} is an apocalyptic number.

It is an amenable number.

11111021222101 is a deficient number, since it is larger than the sum of its proper divisors (653641228739).

11111021222101 is a wasteful number, since it uses less digits than its factorization.

11111021222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2874743.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 11111021222101 its reverse (10122212011111), we get a palindrome (21233233233212).

The spelling of 11111021222101 in words is "eleven trillion, one hundred eleven billion, twenty-one million, two hundred twenty-two thousand, one hundred one".